7z command line to compress folders

Question

I am trying to zip/7z folders using the command line of 7zG.exe. The code I have works for files but not folders. Could someone please show me the correct way using 7z command line to compress folders? Here is the sample code that works for files only. Whenever I try running this code 7zip shows a messagebox saying "Invalid Parameter"

string sourceName = "Folder\Folder1";
string targetName = "Example.gz";

// 1
// Initialize process information.
//
ProcessStartInfo p = new ProcessStartInfo();
p.FileName = "7zG.exe";

// 2
// Use 7-zip
// specify a=archive and -tgzip=gzip
// and then target file in quotes followed by source file in quotes
//
p.Arguments = "a -tgzip \"" + targetName + "\" \"" + sourceName + "\" -mx=9";
p.WindowStyle = ProcessWindowStyle.Hidden;

// 3.
// Start process and wait for it to exit
//
Process x = Process.Start(p);
x.WaitForExit();

Answer 1

as stated in to comment section, you are supposed to use 7za.exe

This link gives you a complete example line

Your code will look like this:

string sourceName = "Folder\Folder1";
string targetName = "Example.gz";

ProcessStartInfo p = new ProcessStartInfo();
//first change
p.FileName = "7za.exe"; 
//second change
p.Arguments = "a -tzip \"" + targetName + "\" \"" + sourceName + "\" -mx=9"; 
p.WindowStyle = ProcessWindowStyle.Hidden;
Process x = Process.Start(p);
x.WaitForExit();